What is the P0152 fault number? What is the description for the O2 Sensor Circuit High Voltage Bank 2 Sensor 1 malfunction? How do you fix P0152 fault code What are the symptoms and causes for the P0152 fault code
What is the P0152 fault code? What does it all mean?
A code P0152 is triggered when the powertrain controller module (PCM), detects a voltage signal from the oxygen sensor (O2) sending a high voltage signal (above1.2V) for a specific period of time (more that 10 seconds). “Bank 2”, in the code description, refers to an engine bank that doesn’t contain the engine number one cylinder. “Sensor 1”, refers to O2 sensors closest to the engine and before the catalytic convert.
The oxygen sensors are used to measure the oxygen level in the exhaust system. It is located on the exhaust pipe and on the exhaust manifold. Modern O2 sensors come with a heating element, which allows them to reach operating temperatures quickly. The exhaust system houses the tip of the sensor. It’s made from steel. The housing houses the zirconium-based sensing element. The element generates small voltages when oxygen is present.
The PCM utilizes data from the oxygen sensor as well as other sensors (e.g. The PCM uses data from the oxygen sensor and other sensors (e.g., throttle position sensor, engine cooler temperature sensor) in order to determine the fuel that will be used to power the engine. Fault code P0152 is recorded if the voltage signal coming from the O2 sensor drops below 1.2 volts during a time period. This also indicates that the engine runs in a rich mixture.
Vehicles susceptible to the P0152 fault code are various models of Jepp (especially Liberty), Dodge and Ford, as well as Nissan, Infiniti and Daihatsu.
What is the P0152 Fault Code and Why Does It Happen?
Just like any other code code, there are many possible causes for setting the P0152 error code. Below are the most common causes.
- – Defective oxygen sensor (Bank 2 Sensor 1)
- Faulty O2 sensor wiring
- – Engine problems causing rich mix
- – A leaking fuel injector
- – Defective fuel pressure regulator
- – A PCM that is not working or needs a software upgrade
What are the symptoms of P0152 Malfunction Code?
You may experience the following symptoms if your vehicle has a code of P0152:
- – Illumination for the check engine light
- – Incorrect operation of the engine (misfires and hesitation).
- – Rich engine running
- – Low engine performance
- – Increased fuel consumption
- – A rise in emission values
Note: In rare cases, the only symptoms may be the check engine lamp.
How to Fix the P0152 Fault Code
- To check if the vehicle will return, the codes must first be cleared.
- – Reparing the wiring and connections to O2 sensor circuits that were shorted.
- – Replacing the defective O2 sensor (Bank 2 Sens 1)
- – Replacing a leaking fuel injector
- – Replacing a faulty fuel pressure regulator
How serious is the P0152 Fault code?
P0152 should only be considered moderately serious as it can cause engine inefficiency and even catalytic convertor failure. The engine’s smooth operation is dependent on O2 sensors. The O2 sensor voltage can determine whether or not the PCM is adding too much fuel to the engine. This code may cause problems with idling or sudden loss of power, so it is important to fix the problem immediately.
